Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

1 results

  • Distinguishing Meteoritic Nanodiamonds from Disordered Carbon Using Atom-Probe Tomography

  • J. B. Lewis, D. Isheim, C. Floss, D. N. Seidman
  • Journal:
    Microscopy Today / Volume 26 / Issue 2 / March 2018
    Published online by Cambridge University Press:
    15 March 2018, pp. 18-23
    Print publication:
    March 2018
    • Article
      • You have access
    • PDF
    • HTML
    • Export citation

  • We have analyzed atom probe tomography reconstructions of disaggregated meteoritic material containing nanodiamonds and disordered carbon to determine whether these phases formed in the solar system or whether they predate the solar system and were formed in supernovae or the interstellar medium. We developed a method to distinguish between these two carbonaceous phases in < 100 nm diameter aggregates using the ratios of various native and contaminant molecular species. We find variations in measured 12C/13C ratios between the two phases that suggest hydrides form more readily during field evaporation of the disordered C than the nanodiamonds.